From
the Gallery:
Canadian Space Agency Astronaut Chris Hadfield stands
on the end of the shuttle's robot arm while working on
the new space station arm.

STS-100
Delivers Canadarm2 to International Space Station
Endeavour and its crew spent almost 12 days on orbit, eight
of which were spent in joint operations with the International
Space Station crew. Endeavourís crew delivered and installed
a new robotic arm and helped to transfer equipment and supplies
between vehicles.

Mission
Specialists Chris Hadfield of the Canadian Space Agency and
Scott Parazynski of NASA performed two space walks to install
the new 17.6-meter (57.7-foot) robotic arm onto the International
Space Station. Canadarm2, a beefier second-generation version
of the shuttle's robot arm, is essential to the continued
assembly of the space station as the outpost grows beyond
the reach of the shuttle's arm.

The
Remote Manipulator System is the first of three Mobile
Service System elements to be installed on the International
Space Station.

Tough
New Robot Arm Is First of Three Mobile Servicer System Pieces
STS-100 was the first of three space shuttle missions to carry
pieces of the Space Station Mobile Servicer System,
or SSMSS to the station. It delivered the long, hinged arm
known as the Remote Manipulator System.

Future
missions will deliver the Mobile Base System -- a work platform
that moves along rails covering the length of the space station
-- and the Special Purpose Dexterous Manipulator, or Canada
Hand.

Canadarm2
- Brains and Brawn

Installed
on station:

April
22, 2001, 5:40 a.m. CDT

Length
:

17.6
meters (57.7 feet)

Weight:

1,800
kilograms (3,968 pounds)

Special
Features:

Larger
range of motion than a human arm.

Automatic
collision avoidance.

Four
color cameras.

Composed
of 19 plies of high-strength carbon fiber.

Space Station Crew Faces a Computer Failure ChallengeThe International Space Station's three Command
and Control Computers began to exhibit problems during Endeavourís
visit. Communications between the station and the ground were
rerouted through Endeavour as flight controllers worked to
solve the problem, and mission managers approved an extended
stay for the shuttle if the computers were not recovered quickly.

After
flight controllers determined that the hard drive on one Command
and Control Computer had failed, space station Flight Engineer
Susan Helms swapped it with another onboard computer. After
reloading software, all three computers booted up normally.
Endeavour brought the failed computer back to Earth for more
testing.